package algotithm.acwing.test793;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;

/**
 * @author zhouyanxiang
 * @Date 2021-01-2021/1/6-14:19
 */
public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        BigInteger n = new BigInteger(reader.readLine());
        BigInteger m = new BigInteger(reader.readLine());
        BigInteger x = n.multiply(m);
        reader.close();
        System.out.println(x);
    }

}
